ReactiveCocoa for a better world: This framework for composing and transforming sequences of values (an open-sourced piece of the magic behind GitHub for Mac) aims to improve how native apps deal with lots of "waiting and reacting".

CP Tent Posts Shortcode: Tent (http://tent.io) is something that I’ve been meaning to look more into, but haven’t had a chance yet. This is a plugin that lets you pull a lists of posts from a Tent server and display them on your WordPress site.